pulsar/src/config.js
2018-09-13 14:08:20 +08:00

1485 lines
46 KiB
JavaScript

const _ = require('underscore-plus')
const {Emitter} = require('event-kit')
const {
getValueAtKeyPath, setValueAtKeyPath, deleteValueAtKeyPath,
pushKeyPath, splitKeyPath
} = require('key-path-helpers')
const Color = require('./color')
const ScopedPropertyStore = require('scoped-property-store')
const ScopeDescriptor = require('./scope-descriptor')
const schemaEnforcers = {}
// Essential: Used to access all of Atom's configuration details.
//
// An instance of this class is always available as the `atom.config` global.
//
// ## Getting and setting config settings.
//
// ```coffee
// # Note that with no value set, ::get returns the setting's default value.
// atom.config.get('my-package.myKey') # -> 'defaultValue'
//
// atom.config.set('my-package.myKey', 'value')
// atom.config.get('my-package.myKey') # -> 'value'
// ```
//
// You may want to watch for changes. Use {::observe} to catch changes to the setting.
//
// ```coffee
// atom.config.set('my-package.myKey', 'value')
// atom.config.observe 'my-package.myKey', (newValue) ->
// # `observe` calls immediately and every time the value is changed
// console.log 'My configuration changed:', newValue
// ```
//
// If you want a notification only when the value changes, use {::onDidChange}.
//
// ```coffee
// atom.config.onDidChange 'my-package.myKey', ({newValue, oldValue}) ->
// console.log 'My configuration changed:', newValue, oldValue
// ```
//
// ### Value Coercion
//
// Config settings each have a type specified by way of a
// [schema](json-schema.org). For example we might want an integer setting that only
// allows integers greater than `0`:
//
// ```coffee
// # When no value has been set, `::get` returns the setting's default value
// atom.config.get('my-package.anInt') # -> 12
//
// # The string will be coerced to the integer 123
// atom.config.set('my-package.anInt', '123')
// atom.config.get('my-package.anInt') # -> 123
//
// # The string will be coerced to an integer, but it must be greater than 0, so is set to 1
// atom.config.set('my-package.anInt', '-20')
// atom.config.get('my-package.anInt') # -> 1
// ```
//
// ## Defining settings for your package
//
// Define a schema under a `config` key in your package main.
//
// ```coffee
// module.exports =
// # Your config schema
// config:
// someInt:
// type: 'integer'
// default: 23
// minimum: 1
//
// activate: (state) -> # ...
// # ...
// ```
//
// See [package docs](http://flight-manual.atom.io/hacking-atom/sections/package-word-count/) for
// more info.
//
// ## Config Schemas
//
// We use [json schema](http://json-schema.org) which allows you to define your value's
// default, the type it should be, etc. A simple example:
//
// ```coffee
// # We want to provide an `enableThing`, and a `thingVolume`
// config:
// enableThing:
// type: 'boolean'
// default: false
// thingVolume:
// type: 'integer'
// default: 5
// minimum: 1
// maximum: 11
// ```
//
// The type keyword allows for type coercion and validation. If a `thingVolume` is
// set to a string `'10'`, it will be coerced into an integer.
//
// ```coffee
// atom.config.set('my-package.thingVolume', '10')
// atom.config.get('my-package.thingVolume') # -> 10
//
// # It respects the min / max
// atom.config.set('my-package.thingVolume', '400')
// atom.config.get('my-package.thingVolume') # -> 11
//
// # If it cannot be coerced, the value will not be set
// atom.config.set('my-package.thingVolume', 'cats')
// atom.config.get('my-package.thingVolume') # -> 11
// ```
//
// ### Supported Types
//
// The `type` keyword can be a string with any one of the following. You can also
// chain them by specifying multiple in an an array. For example
//
// ```coffee
// config:
// someSetting:
// type: ['boolean', 'integer']
// default: 5
//
// # Then
// atom.config.set('my-package.someSetting', 'true')
// atom.config.get('my-package.someSetting') # -> true
//
// atom.config.set('my-package.someSetting', '12')
// atom.config.get('my-package.someSetting') # -> 12
// ```
//
// #### string
//
// Values must be a string.
//
// ```coffee
// config:
// someSetting:
// type: 'string'
// default: 'hello'
// ```
//
// #### integer
//
// Values will be coerced into integer. Supports the (optional) `minimum` and
// `maximum` keys.
//
// ```coffee
// config:
// someSetting:
// type: 'integer'
// default: 5
// minimum: 1
// maximum: 11
// ```
//
// #### number
//
// Values will be coerced into a number, including real numbers. Supports the
// (optional) `minimum` and `maximum` keys.
//
// ```coffee
// config:
// someSetting:
// type: 'number'
// default: 5.3
// minimum: 1.5
// maximum: 11.5
// ```
//
// #### boolean
//
// Values will be coerced into a Boolean. `'true'` and `'false'` will be coerced into
// a boolean. Numbers, arrays, objects, and anything else will not be coerced.
//
// ```coffee
// config:
// someSetting:
// type: 'boolean'
// default: false
// ```
//
// #### array
//
// Value must be an Array. The types of the values can be specified by a
// subschema in the `items` key.
//
// ```coffee
// config:
// someSetting:
// type: 'array'
// default: [1, 2, 3]
// items:
// type: 'integer'
// minimum: 1.5
// maximum: 11.5
// ```
//
// #### color
//
// Values will be coerced into a {Color} with `red`, `green`, `blue`, and `alpha`
// properties that all have numeric values. `red`, `green`, `blue` will be in
// the range 0 to 255 and `value` will be in the range 0 to 1. Values can be any
// valid CSS color format such as `#abc`, `#abcdef`, `white`,
// `rgb(50, 100, 150)`, and `rgba(25, 75, 125, .75)`.
//
// ```coffee
// config:
// someSetting:
// type: 'color'
// default: 'white'
// ```
//
// #### object / Grouping other types
//
// A config setting with the type `object` allows grouping a set of config
// settings. The group will be visually separated and has its own group headline.
// The sub options must be listed under a `properties` key.
//
// ```coffee
// config:
// someSetting:
// type: 'object'
// properties:
// myChildIntOption:
// type: 'integer'
// minimum: 1.5
// maximum: 11.5
// ```
//
// ### Other Supported Keys
//
// #### enum
//
// All types support an `enum` key, which lets you specify all the values the
// setting can take. `enum` may be an array of allowed values (of the specified
// type), or an array of objects with `value` and `description` properties, where
// the `value` is an allowed value, and the `description` is a descriptive string
// used in the settings view.
//
// In this example, the setting must be one of the 4 integers:
//
// ```coffee
// config:
// someSetting:
// type: 'integer'
// default: 4
// enum: [2, 4, 6, 8]
// ```
//
// In this example, the setting must be either 'foo' or 'bar', which are
// presented using the provided descriptions in the settings pane:
//
// ```coffee
// config:
// someSetting:
// type: 'string'
// default: 'foo'
// enum: [
// {value: 'foo', description: 'Foo mode. You want this.'}
// {value: 'bar', description: 'Bar mode. Nobody wants that!'}
// ]
// ```
//
// Usage:
//
// ```coffee
// atom.config.set('my-package.someSetting', '2')
// atom.config.get('my-package.someSetting') # -> 2
//
// # will not set values outside of the enum values
// atom.config.set('my-package.someSetting', '3')
// atom.config.get('my-package.someSetting') # -> 2
//
// # If it cannot be coerced, the value will not be set
// atom.config.set('my-package.someSetting', '4')
// atom.config.get('my-package.someSetting') # -> 4
// ```
//
// #### title and description
//
// The settings view will use the `title` and `description` keys to display your
// config setting in a readable way. By default the settings view humanizes your
// config key, so `someSetting` becomes `Some Setting`. In some cases, this is
// confusing for users, and a more descriptive title is useful.
//
// Descriptions will be displayed below the title in the settings view.
//
// For a group of config settings the humanized key or the title and the
// description are used for the group headline.
//
// ```coffee
// config:
// someSetting:
// title: 'Setting Magnitude'
// description: 'This will affect the blah and the other blah'
// type: 'integer'
// default: 4
// ```
//
// __Note__: You should strive to be so clear in your naming of the setting that
// you do not need to specify a title or description!
//
// Descriptions allow a subset of
// [Markdown formatting](https://help.github.com/articles/github-flavored-markdown/).
// Specifically, you may use the following in configuration setting descriptions:
//
// * **bold** - `**bold**`
// * *italics* - `*italics*`
// * [links](https://atom.io) - `[links](https://atom.io)`
// * `code spans` - `` `code spans` ``
// * line breaks - `line breaks<br/>`
// * ~~strikethrough~~ - `~~strikethrough~~`
//
// #### order
//
// The settings view orders your settings alphabetically. You can override this
// ordering with the order key.
//
// ```coffee
// config:
// zSetting:
// type: 'integer'
// default: 4
// order: 1
// aSetting:
// type: 'integer'
// default: 4
// order: 2
// ```
//
// ## Manipulating values outside your configuration schema
//
// It is possible to manipulate(`get`, `set`, `observe` etc) values that do not
// appear in your configuration schema. For example, if the config schema of the
// package 'some-package' is
//
// ```coffee
// config:
// someSetting:
// type: 'boolean'
// default: false
// ```
//
// You can still do the following
//
// ```coffee
// let otherSetting = atom.config.get('some-package.otherSetting')
// atom.config.set('some-package.stillAnotherSetting', otherSetting * 5)
// ```
//
// In other words, if a function asks for a `key-path`, that path doesn't have to
// be described in the config schema for the package or any package. However, as
// highlighted in the best practices section, you are advised against doing the
// above.
//
// ## Best practices
//
// * Don't depend on (or write to) configuration keys outside of your keypath.
//
class Config {
static addSchemaEnforcer (typeName, enforcerFunction) {
if (schemaEnforcers[typeName] == null) { schemaEnforcers[typeName] = [] }
return schemaEnforcers[typeName].push(enforcerFunction)
}
static addSchemaEnforcers (filters) {
for (let typeName in filters) {
const functions = filters[typeName]
for (let name in functions) {
const enforcerFunction = functions[name]
this.addSchemaEnforcer(typeName, enforcerFunction)
}
}
}
static executeSchemaEnforcers (keyPath, value, schema) {
let error = null
let types = schema.type
if (!Array.isArray(types)) { types = [types] }
for (let type of types) {
try {
const enforcerFunctions = schemaEnforcers[type].concat(schemaEnforcers['*'])
for (let enforcer of enforcerFunctions) {
// At some point in one's life, one must call upon an enforcer.
value = enforcer.call(this, keyPath, value, schema)
}
error = null
break
} catch (e) {
error = e
}
}
if (error != null) { throw error }
return value
}
// Created during initialization, available as `atom.config`
constructor (params = {}) {
this.clear()
this.initialize(params)
}
initialize ({saveCallback, mainSource, projectHomeSchema}) {
if (saveCallback) {
this.saveCallback = saveCallback
}
if (mainSource) this.mainSource = mainSource
if (projectHomeSchema) {
this.schema.properties.core.properties.projectHome = projectHomeSchema
this.defaultSettings.core.projectHome = projectHomeSchema.default
}
}
clear () {
this.emitter = new Emitter()
this.schema = {
type: 'object',
properties: {}
}
this.defaultSettings = {}
this.settings = {}
this.projectSettings = {}
this.projectFile = null
this.scopedSettingsStore = new ScopedPropertyStore()
this.settingsLoaded = false
this.transactDepth = 0
this.pendingOperations = []
this.legacyScopeAliases = new Map()
this.requestSave = _.debounce(() => this.save(), 1)
}
/*
Section: Config Subscription
*/
// Essential: Add a listener for changes to a given key path. This is different
// than {::onDidChange} in that it will immediately call your callback with the
// current value of the config entry.
//
// ### Examples
//
// You might want to be notified when the themes change. We'll watch
// `core.themes` for changes
//
// ```coffee
// atom.config.observe 'core.themes', (value) ->
// # do stuff with value
// ```
//
// * `keyPath` {String} name of the key to observe
// * `options` (optional) {Object}
// * `scope` (optional) {ScopeDescriptor} describing a path from
// the root of the syntax tree to a token. Get one by calling
// {editor.getLastCursor().getScopeDescriptor()}. See {::get} for examples.
// See [the scopes docs](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
// for more information.
// * `callback` {Function} to call when the value of the key changes.
// * `value` the new value of the key
//
// Returns a {Disposable} with the following keys on which you can call
// `.dispose()` to unsubscribe.
observe (...args) {
let callback, keyPath, options, scopeDescriptor
if (args.length === 2) {
[keyPath, callback] = args
} else if ((args.length === 3) && (_.isString(args[0]) && _.isObject(args[1]))) {
[keyPath, options, callback] = args
scopeDescriptor = options.scope
} else {
console.error('An unsupported form of Config::observe is being used. See https://atom.io/docs/api/latest/Config for details')
return
}
if (scopeDescriptor != null) {
return this.observeScopedKeyPath(scopeDescriptor, keyPath, callback)
} else {
return this.observeKeyPath(keyPath, options != null ? options : {}, callback)
}
}
// Essential: Add a listener for changes to a given key path. If `keyPath` is
// not specified, your callback will be called on changes to any key.
//
// * `keyPath` (optional) {String} name of the key to observe. Must be
// specified if `scopeDescriptor` is specified.
// * `options` (optional) {Object}
// * `scope` (optional) {ScopeDescriptor} describing a path from
// the root of the syntax tree to a token. Get one by calling
// {editor.getLastCursor().getScopeDescriptor()}. See {::get} for examples.
// See [the scopes docs](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
// for more information.
// * `callback` {Function} to call when the value of the key changes.
// * `event` {Object}
// * `newValue` the new value of the key
// * `oldValue` the prior value of the key.
//
// Returns a {Disposable} with the following keys on which you can call
// `.dispose()` to unsubscribe.
onDidChange (...args) {
let callback, keyPath, scopeDescriptor
if (args.length === 1) {
[callback] = args
} else if (args.length === 2) {
[keyPath, callback] = args
} else {
let options;
[keyPath, options, callback] = args
scopeDescriptor = options.scope
}
if (scopeDescriptor != null) {
return this.onDidChangeScopedKeyPath(scopeDescriptor, keyPath, callback)
} else {
return this.onDidChangeKeyPath(keyPath, callback)
}
}
/*
Section: Managing Settings
*/
// Essential: Retrieves the setting for the given key.
//
// ### Examples
//
// You might want to know what themes are enabled, so check `core.themes`
//
// ```coffee
// atom.config.get('core.themes')
// ```
//
// With scope descriptors you can get settings within a specific editor
// scope. For example, you might want to know `editor.tabLength` for ruby
// files.
//
// ```coffee
// atom.config.get('editor.tabLength', scope: ['source.ruby']) # => 2
// ```
//
// This setting in ruby files might be different than the global tabLength setting
//
// ```coffee
// atom.config.get('editor.tabLength') # => 4
// atom.config.get('editor.tabLength', scope: ['source.ruby']) # => 2
// ```
//
// You can get the language scope descriptor via
// {TextEditor::getRootScopeDescriptor}. This will get the setting specifically
// for the editor's language.
//
// ```coffee
// atom.config.get('editor.tabLength', scope: @editor.getRootScopeDescriptor()) # => 2
// ```
//
// Additionally, you can get the setting at the specific cursor position.
//
// ```coffee
// scopeDescriptor = @editor.getLastCursor().getScopeDescriptor()
// atom.config.get('editor.tabLength', scope: scopeDescriptor) # => 2
// ```
//
// * `keyPath` The {String} name of the key to retrieve.
// * `options` (optional) {Object}
// * `sources` (optional) {Array} of {String} source names. If provided, only
// values that were associated with these sources during {::set} will be used.
// * `excludeSources` (optional) {Array} of {String} source names. If provided,
// values that were associated with these sources during {::set} will not
// be used.
// * `scope` (optional) {ScopeDescriptor} describing a path from
// the root of the syntax tree to a token. Get one by calling
// {editor.getLastCursor().getScopeDescriptor()}
// See [the scopes docs](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
// for more information.
//
// Returns the value from Atom's default settings, the user's configuration
// file in the type specified by the configuration schema.
get (...args) {
let keyPath, options, scope
if (args.length > 1) {
if ((typeof args[0] === 'string') || (args[0] == null)) {
[keyPath, options] = args;
({scope} = options)
}
} else {
[keyPath] = args
}
if (scope != null) {
const value = this.getRawScopedValue(scope, keyPath, options)
return value != null ? value : this.getRawValue(keyPath, options)
} else {
return this.getRawValue(keyPath, options)
}
}
// Extended: Get all of the values for the given key-path, along with their
// associated scope selector.
//
// * `keyPath` The {String} name of the key to retrieve
// * `options` (optional) {Object} see the `options` argument to {::get}
//
// Returns an {Array} of {Object}s with the following keys:
// * `scopeDescriptor` The {ScopeDescriptor} with which the value is associated
// * `value` The value for the key-path
getAll (keyPath, options) {
let globalValue, result, scope
if (options != null) { ({scope} = options) }
if (scope != null) {
let legacyScopeDescriptor
const scopeDescriptor = ScopeDescriptor.fromObject(scope)
result = this.scopedSettingsStore.getAll(
scopeDescriptor.getScopeChain(),
keyPath,
options
)
legacyScopeDescriptor = this.getLegacyScopeDescriptorForNewScopeDescriptor(scopeDescriptor)
if (legacyScopeDescriptor) {
result.push(...Array.from(this.scopedSettingsStore.getAll(
legacyScopeDescriptor.getScopeChain(),
keyPath,
options
) || []))
}
} else {
result = []
}
globalValue = this.getRawValue(keyPath, options)
if (globalValue) {
result.push({scopeSelector: '*', value: globalValue})
}
return result
}
// Essential: Sets the value for a configuration setting.
//
// This value is stored in Atom's internal configuration file.
//
// ### Examples
//
// You might want to change the themes programmatically:
//
// ```coffee
// atom.config.set('core.themes', ['atom-light-ui', 'atom-light-syntax'])
// ```
//
// You can also set scoped settings. For example, you might want change the
// `editor.tabLength` only for ruby files.
//
// ```coffee
// atom.config.get('editor.tabLength') # => 4
// atom.config.get('editor.tabLength', scope: ['source.ruby']) # => 4
// atom.config.get('editor.tabLength', scope: ['source.js']) # => 4
//
// # Set ruby to 2
// atom.config.set('editor.tabLength', 2, scopeSelector: '.source.ruby') # => true
//
// # Notice it's only set to 2 in the case of ruby
// atom.config.get('editor.tabLength') # => 4
// atom.config.get('editor.tabLength', scope: ['source.ruby']) # => 2
// atom.config.get('editor.tabLength', scope: ['source.js']) # => 4
// ```
//
// * `keyPath` The {String} name of the key.
// * `value` The value of the setting. Passing `undefined` will revert the
// setting to the default value.
// * `options` (optional) {Object}
// * `scopeSelector` (optional) {String}. eg. '.source.ruby'
// See [the scopes docs](http://flight-manual.atom.io/behind-atom/sections/scoped-settings-scopes-and-scope-descriptors/)
// for more information.
// * `source` (optional) {String} The name of a file with which the setting
// is associated. Defaults to the user's config file.
//
// Returns a {Boolean}
// * `true` if the value was set.
// * `false` if the value was not able to be coerced to the type specified in the setting's schema.
set (...args) {
let [keyPath, value, options = {}] = args
if (!this.settingsLoaded) {
this.pendingOperations.push(() => this.set(keyPath, value, options))
}
const scopeSelector = options.scopeSelector
let source = options.source
const shouldSave = options.save != null ? options.save : true
if (source && !scopeSelector && source !== this.projectFile) {
throw new Error("::set with a 'source' and no 'sourceSelector' is not yet implemented!")
}
if (!source) source = this.mainSource
if (value !== undefined) {
try {
value = this.makeValueConformToSchema(keyPath, value)
} catch (e) {
return false
}
}
if (scopeSelector != null) {
this.setRawScopedValue(keyPath, value, source, scopeSelector)
} else {
this.setRawValue(keyPath, value, {source})
}
if (source === this.mainSource && shouldSave && this.settingsLoaded) {
this.requestSave()
}
return true
}
// Essential: Restore the setting at `keyPath` to its default value.
//
// * `keyPath` The {String} name of the key.
// * `options` (optional) {Object}
// * `scopeSelector` (optional) {String}. See {::set}
// * `source` (optional) {String}. See {::set}
unset (keyPath, options) {
if (!this.settingsLoaded) {
this.pendingOperations.push(() => this.unset(keyPath, options))
}
let {scopeSelector, source} = options != null ? options : {}
if (source == null) { source = this.mainSource }
if (scopeSelector != null) {
if (keyPath != null) {
let settings = this.scopedSettingsStore.propertiesForSourceAndSelector(source, scopeSelector)
if (getValueAtKeyPath(settings, keyPath) != null) {
this.scopedSettingsStore.removePropertiesForSourceAndSelector(source, scopeSelector)
setValueAtKeyPath(settings, keyPath, undefined)
settings = withoutEmptyObjects(settings)
if (settings != null) {
this.set(null, settings, {scopeSelector, source, priority: this.priorityForSource(source)})
}
const configIsReady = (source === this.mainSource) && this.settingsLoaded
if (configIsReady) {
return this.requestSave()
}
}
} else {
this.scopedSettingsStore.removePropertiesForSourceAndSelector(source, scopeSelector)
return this.emitChangeEvent()
}
} else {
for (scopeSelector in this.scopedSettingsStore.propertiesForSource(source)) {
this.unset(keyPath, {scopeSelector, source})
}
if ((keyPath != null) && (source === this.mainSource)) {
return this.set(keyPath, getValueAtKeyPath(this.defaultSettings, keyPath))
}
}
}
// Extended: Get an {Array} of all of the `source` {String}s with which
// settings have been added via {::set}.
getSources () {
return _.uniq(_.pluck(this.scopedSettingsStore.propertySets, 'source')).sort()
}
// Extended: Retrieve the schema for a specific key path. The schema will tell
// you what type the keyPath expects, and other metadata about the config
// option.
//
// * `keyPath` The {String} name of the key.
//
// Returns an {Object} eg. `{type: 'integer', default: 23, minimum: 1}`.
// Returns `null` when the keyPath has no schema specified, but is accessible
// from the root schema.
getSchema (keyPath) {
const keys = splitKeyPath(keyPath)
let { schema } = this
for (let key of keys) {
let childSchema
if (schema.type === 'object') {
childSchema = schema.properties != null ? schema.properties[key] : undefined
if (childSchema == null) {
if (isPlainObject(schema.additionalProperties)) {
childSchema = schema.additionalProperties
} else if (schema.additionalProperties === false) {
return null
} else {
return {type: 'any'}
}
}
} else {
return null
}
schema = childSchema
}
return schema
}
getUserConfigPath () {
return this.mainSource
}
// Extended: Suppress calls to handler functions registered with {::onDidChange}
// and {::observe} for the duration of `callback`. After `callback` executes,
// handlers will be called once if the value for their key-path has changed.
//
// * `callback` {Function} to execute while suppressing calls to handlers.
transact (callback) {
this.beginTransaction()
try {
return callback()
} finally {
this.endTransaction()
}
}
getLegacyScopeDescriptorForNewScopeDescriptor (scopeDescriptor) {
return null
}
/*
Section: Internal methods used by core
*/
// Private: Suppress calls to handler functions registered with {::onDidChange}
// and {::observe} for the duration of the {Promise} returned by `callback`.
// After the {Promise} is either resolved or rejected, handlers will be called
// once if the value for their key-path has changed.
//
// * `callback` {Function} that returns a {Promise}, which will be executed
// while suppressing calls to handlers.
//
// Returns a {Promise} that is either resolved or rejected according to the
// `{Promise}` returned by `callback`. If `callback` throws an error, a
// rejected {Promise} will be returned instead.
transactAsync (callback) {
let endTransaction
this.beginTransaction()
try {
endTransaction = fn => (...args) => {
this.endTransaction()
return fn(...args)
}
const result = callback()
return new Promise((resolve, reject) => {
return result.then(endTransaction(resolve)).catch(endTransaction(reject))
})
} catch (error) {
this.endTransaction()
return Promise.reject(error)
}
}
beginTransaction () {
this.transactDepth++
}
endTransaction () {
this.transactDepth--
this.emitChangeEvent()
}
pushAtKeyPath (keyPath, value) {
const left = this.get(keyPath)
const arrayValue = (left == null ? [] : left)
const result = arrayValue.push(value)
this.set(keyPath, arrayValue)
return result
}
unshiftAtKeyPath (keyPath, value) {
const left = this.get(keyPath)
const arrayValue = (left == null ? [] : left)
const result = arrayValue.unshift(value)
this.set(keyPath, arrayValue)
return result
}
removeAtKeyPath (keyPath, value) {
const left = this.get(keyPath)
const arrayValue = (left == null ? [] : left)
const result = _.remove(arrayValue, value)
this.set(keyPath, arrayValue)
return result
}
setSchema (keyPath, schema) {
if (!isPlainObject(schema)) {
throw new Error(`Error loading schema for ${keyPath}: schemas can only be objects!`)
}
if (schema.type == null) {
throw new Error(`Error loading schema for ${keyPath}: schema objects must have a type attribute`)
}
let rootSchema = this.schema
if (keyPath) {
for (let key of splitKeyPath(keyPath)) {
rootSchema.type = 'object'
if (rootSchema.properties == null) { rootSchema.properties = {} }
const { properties } = rootSchema
if (properties[key] == null) { properties[key] = {} }
rootSchema = properties[key]
}
}
Object.assign(rootSchema, schema)
this.transact(() => {
this.setDefaults(keyPath, this.extractDefaultsFromSchema(schema))
this.setScopedDefaultsFromSchema(keyPath, schema)
this.resetSettingsForSchemaChange()
})
}
save () {
if (this.saveCallback) {
let allSettings = {'*': this.settings}
allSettings = Object.assign(allSettings, this.scopedSettingsStore.propertiesForSource(this.mainSource))
allSettings = sortObject(allSettings)
this.saveCallback(allSettings)
}
}
/*
Section: Private methods managing global settings
*/
resetUserSettings (newSettings, options = {}) {
this._resetSettings(newSettings, options)
}
_resetSettings (newSettings, options = {}) {
const source = options.source
newSettings = Object.assign({}, newSettings)
if (newSettings.global != null) {
newSettings['*'] = newSettings.global
delete newSettings.global
}
if (newSettings['*'] != null) {
const scopedSettings = newSettings
newSettings = newSettings['*']
delete scopedSettings['*']
this.resetScopedSettings(scopedSettings, {source})
}
return this.transact(() => {
this._clearUnscopedSettingsForSource(source)
this.settingsLoaded = true
for (let key in newSettings) {
const value = newSettings[key]
this.set(key, value, {save: false, source})
}
if (this.pendingOperations.length) {
for (let op of this.pendingOperations) { op() }
this.pendingOperations = []
}
})
}
_clearUnscopedSettingsForSource (source) {
if (source === this.projectFile) {
this.projectSettings = {}
} else {
this.settings = {}
}
}
resetProjectSettings (newSettings, projectFile) {
// Sets the scope and source of all project settings to `path`.
newSettings = Object.assign({}, newSettings)
const oldProjectFile = this.projectFile
this.projectFile = projectFile
if (this.projectFile != null) {
this._resetSettings(newSettings, {source: this.projectFile})
} else {
this.scopedSettingsStore.removePropertiesForSource(oldProjectFile)
this.projectSettings = {}
}
}
clearProjectSettings () {
this.resetProjectSettings({}, null)
}
getRawValue (keyPath, options = {}) {
let value
if (!options.excludeSources || !options.excludeSources.includes(this.mainSource)) {
value = getValueAtKeyPath(this.settings, keyPath)
if (this.projectFile != null) {
const projectValue = getValueAtKeyPath(this.projectSettings, keyPath)
value = (projectValue === undefined) ? value : projectValue
}
}
let defaultValue
if (!options.sources || options.sources.length === 0) {
defaultValue = getValueAtKeyPath(this.defaultSettings, keyPath)
}
if (value != null) {
value = this.deepClone(value)
if (isPlainObject(value) && isPlainObject(defaultValue)) {
this.deepDefaults(value, defaultValue)
}
return value
} else {
return this.deepClone(defaultValue)
}
}
setRawValue (keyPath, value, options = {}) {
const source = options.source ? options.source : undefined
const settingsToChange = source === this.projectFile ? 'projectSettings' : 'settings'
const defaultValue = getValueAtKeyPath(this.defaultSettings, keyPath)
if (_.isEqual(defaultValue, value)) {
if (keyPath != null) {
deleteValueAtKeyPath(this[settingsToChange], keyPath)
} else {
this[settingsToChange] = null
}
} else {
if (keyPath != null) {
setValueAtKeyPath(this[settingsToChange], keyPath, value)
} else {
this[settingsToChange] = value
}
}
return this.emitChangeEvent()
}
observeKeyPath (keyPath, options, callback) {
callback(this.get(keyPath))
return this.onDidChangeKeyPath(keyPath, event => callback(event.newValue))
}
onDidChangeKeyPath (keyPath, callback) {
let oldValue = this.get(keyPath)
return this.emitter.on('did-change', () => {
const newValue = this.get(keyPath)
if (!_.isEqual(oldValue, newValue)) {
const event = {oldValue, newValue}
oldValue = newValue
return callback(event)
}
})
}
isSubKeyPath (keyPath, subKeyPath) {
if ((keyPath == null) || (subKeyPath == null)) { return false }
const pathSubTokens = splitKeyPath(subKeyPath)
const pathTokens = splitKeyPath(keyPath).slice(0, pathSubTokens.length)
return _.isEqual(pathTokens, pathSubTokens)
}
setRawDefault (keyPath, value) {
setValueAtKeyPath(this.defaultSettings, keyPath, value)
return this.emitChangeEvent()
}
setDefaults (keyPath, defaults) {
if ((defaults != null) && isPlainObject(defaults)) {
const keys = splitKeyPath(keyPath)
this.transact(() => {
const result = []
for (let key in defaults) {
const childValue = defaults[key]
if (!defaults.hasOwnProperty(key)) { continue }
result.push(this.setDefaults(keys.concat([key]).join('.'), childValue))
}
return result
})
} else {
try {
defaults = this.makeValueConformToSchema(keyPath, defaults)
this.setRawDefault(keyPath, defaults)
} catch (e) {
console.warn(`'${keyPath}' could not set the default. Attempted default: ${JSON.stringify(defaults)}; Schema: ${JSON.stringify(this.getSchema(keyPath))}`)
}
}
}
deepClone (object) {
if (object instanceof Color) {
return object.clone()
} else if (Array.isArray(object)) {
return object.map(value => this.deepClone(value))
} else if (isPlainObject(object)) {
return _.mapObject(object, (key, value) => [key, this.deepClone(value)])
} else {
return object
}
}
deepDefaults (target) {
let result = target
let i = 0
while (++i < arguments.length) {
const object = arguments[i]
if (isPlainObject(result) && isPlainObject(object)) {
for (let key of Object.keys(object)) {
result[key] = this.deepDefaults(result[key], object[key])
}
} else {
if ((result == null)) {
result = this.deepClone(object)
}
}
}
return result
}
// `schema` will look something like this
//
// ```coffee
// type: 'string'
// default: 'ok'
// scopes:
// '.source.js':
// default: 'omg'
// ```
setScopedDefaultsFromSchema (keyPath, schema) {
if ((schema.scopes != null) && isPlainObject(schema.scopes)) {
const scopedDefaults = {}
for (let scope in schema.scopes) {
const scopeSchema = schema.scopes[scope]
if (!scopeSchema.hasOwnProperty('default')) { continue }
scopedDefaults[scope] = {}
setValueAtKeyPath(scopedDefaults[scope], keyPath, scopeSchema.default)
}
this.scopedSettingsStore.addProperties('schema-default', scopedDefaults)
}
if ((schema.type === 'object') && (schema.properties != null) && isPlainObject(schema.properties)) {
const keys = splitKeyPath(keyPath)
for (let key in schema.properties) {
const childValue = schema.properties[key]
if (!schema.properties.hasOwnProperty(key)) { continue }
this.setScopedDefaultsFromSchema(keys.concat([key]).join('.'), childValue)
}
}
}
extractDefaultsFromSchema (schema) {
if (schema.default != null) {
return schema.default
} else if ((schema.type === 'object') && (schema.properties != null) && isPlainObject(schema.properties)) {
const defaults = {}
const properties = schema.properties || {}
for (let key in properties) { const value = properties[key]; defaults[key] = this.extractDefaultsFromSchema(value) }
return defaults
}
}
makeValueConformToSchema (keyPath, value, options) {
if (options != null ? options.suppressException : undefined) {
try {
return this.makeValueConformToSchema(keyPath, value)
} catch (e) {
return undefined
}
} else {
let schema
if ((schema = this.getSchema(keyPath)) == null) {
if (schema === false) { throw new Error(`Illegal key path ${keyPath}`) }
}
return this.constructor.executeSchemaEnforcers(keyPath, value, schema)
}
}
// When the schema is changed / added, there may be values set in the config
// that do not conform to the schema. This will reset make them conform.
resetSettingsForSchemaChange (source) {
if (source == null) { source = this.mainSource }
return this.transact(() => {
this.settings = this.makeValueConformToSchema(null, this.settings, {suppressException: true})
const selectorsAndSettings = this.scopedSettingsStore.propertiesForSource(source)
this.scopedSettingsStore.removePropertiesForSource(source)
for (let scopeSelector in selectorsAndSettings) {
let settings = selectorsAndSettings[scopeSelector]
settings = this.makeValueConformToSchema(null, settings, {suppressException: true})
this.setRawScopedValue(null, settings, source, scopeSelector)
}
})
}
/*
Section: Private Scoped Settings
*/
priorityForSource (source) {
switch (source) {
case this.mainSource:
return 1000
case this.projectFile:
return 2000
default:
return 0
}
}
emitChangeEvent () {
if (this.transactDepth <= 0) { return this.emitter.emit('did-change') }
}
resetScopedSettings (newScopedSettings, options = {}) {
const source = options.source == null ? this.mainSource : options.source
const priority = this.priorityForSource(source)
this.scopedSettingsStore.removePropertiesForSource(source)
for (let scopeSelector in newScopedSettings) {
let settings = newScopedSettings[scopeSelector]
settings = this.makeValueConformToSchema(null, settings, {suppressException: true})
const validatedSettings = {}
validatedSettings[scopeSelector] = withoutEmptyObjects(settings)
if (validatedSettings[scopeSelector] != null) { this.scopedSettingsStore.addProperties(source, validatedSettings, {priority}) }
}
return this.emitChangeEvent()
}
setRawScopedValue (keyPath, value, source, selector, options) {
if (keyPath != null) {
const newValue = {}
setValueAtKeyPath(newValue, keyPath, value)
value = newValue
}
const settingsBySelector = {}
settingsBySelector[selector] = value
this.scopedSettingsStore.addProperties(source, settingsBySelector, {priority: this.priorityForSource(source)})
return this.emitChangeEvent()
}
getRawScopedValue (scopeDescriptor, keyPath, options) {
scopeDescriptor = ScopeDescriptor.fromObject(scopeDescriptor)
const result = this.scopedSettingsStore.getPropertyValue(
scopeDescriptor.getScopeChain(),
keyPath,
options
)
const legacyScopeDescriptor = this.getLegacyScopeDescriptorForNewScopeDescriptor(scopeDescriptor)
if (result != null) {
return result
} else if (legacyScopeDescriptor) {
return this.scopedSettingsStore.getPropertyValue(
legacyScopeDescriptor.getScopeChain(),
keyPath,
options
)
}
}
observeScopedKeyPath (scope, keyPath, callback) {
callback(this.get(keyPath, {scope}))
return this.onDidChangeScopedKeyPath(scope, keyPath, event => callback(event.newValue))
}
onDidChangeScopedKeyPath (scope, keyPath, callback) {
let oldValue = this.get(keyPath, {scope})
return this.emitter.on('did-change', () => {
const newValue = this.get(keyPath, {scope})
if (!_.isEqual(oldValue, newValue)) {
const event = {oldValue, newValue}
oldValue = newValue
callback(event)
}
})
}
};
// Base schema enforcers. These will coerce raw input into the specified type,
// and will throw an error when the value cannot be coerced. Throwing the error
// will indicate that the value should not be set.
//
// Enforcers are run from most specific to least. For a schema with type
// `integer`, all the enforcers for the `integer` type will be run first, in
// order of specification. Then the `*` enforcers will be run, in order of
// specification.
Config.addSchemaEnforcers({
'any': {
coerce (keyPath, value, schema) {
return value
}
},
'integer': {
coerce (keyPath, value, schema) {
value = parseInt(value)
if (isNaN(value) || !isFinite(value)) { throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} cannot be coerced into an int`) }
return value
}
},
'number': {
coerce (keyPath, value, schema) {
value = parseFloat(value)
if (isNaN(value) || !isFinite(value)) { throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} cannot be coerced into a number`) }
return value
}
},
'boolean': {
coerce (keyPath, value, schema) {
switch (typeof value) {
case 'string':
if (value.toLowerCase() === 'true') {
return true
} else if (value.toLowerCase() === 'false') {
return false
} else {
throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} must be a boolean or the string 'true' or 'false'`)
}
case 'boolean':
return value
default:
throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} must be a boolean or the string 'true' or 'false'`)
}
}
},
'string': {
validate (keyPath, value, schema) {
if (typeof value !== 'string') {
throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} must be a string`)
}
return value
},
validateMaximumLength (keyPath, value, schema) {
if ((typeof schema.maximumLength === 'number') && (value.length > schema.maximumLength)) {
return value.slice(0, schema.maximumLength)
} else {
return value
}
}
},
'null': {
// null sort of isnt supported. It will just unset in this case
coerce (keyPath, value, schema) {
if (![undefined, null].includes(value)) { throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} must be null`) }
return value
}
},
'object': {
coerce (keyPath, value, schema) {
if (!isPlainObject(value)) { throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} must be an object`) }
if (schema.properties == null) { return value }
let defaultChildSchema = null
let allowsAdditionalProperties = true
if (isPlainObject(schema.additionalProperties)) {
defaultChildSchema = schema.additionalProperties
}
if (schema.additionalProperties === false) {
allowsAdditionalProperties = false
}
const newValue = {}
for (let prop in value) {
const propValue = value[prop]
const childSchema = schema.properties[prop] != null ? schema.properties[prop] : defaultChildSchema
if (childSchema != null) {
try {
newValue[prop] = this.executeSchemaEnforcers(pushKeyPath(keyPath, prop), propValue, childSchema)
} catch (error) {
console.warn(`Error setting item in object: ${error.message}`)
}
} else if (allowsAdditionalProperties) {
// Just pass through un-schema'd values
newValue[prop] = propValue
} else {
console.warn(`Illegal object key: ${keyPath}.${prop}`)
}
}
return newValue
}
},
'array': {
coerce (keyPath, value, schema) {
if (!Array.isArray(value)) { throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} must be an array`) }
const itemSchema = schema.items
if (itemSchema != null) {
const newValue = []
for (let item of value) {
try {
newValue.push(this.executeSchemaEnforcers(keyPath, item, itemSchema))
} catch (error) {
console.warn(`Error setting item in array: ${error.message}`)
}
}
return newValue
} else {
return value
}
}
},
'color': {
coerce (keyPath, value, schema) {
const color = Color.parse(value)
if (color == null) {
throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} cannot be coerced into a color`)
}
return color
}
},
'*': {
coerceMinimumAndMaximum (keyPath, value, schema) {
if (typeof value !== 'number') { return value }
if ((schema.minimum != null) && (typeof schema.minimum === 'number')) {
value = Math.max(value, schema.minimum)
}
if ((schema.maximum != null) && (typeof schema.maximum === 'number')) {
value = Math.min(value, schema.maximum)
}
return value
},
validateEnum (keyPath, value, schema) {
let possibleValues = schema.enum
if (Array.isArray(possibleValues)) {
possibleValues = possibleValues.map(value => {
if (value.hasOwnProperty('value')) { return value.value } else { return value }
})
}
if ((possibleValues == null) || !Array.isArray(possibleValues) || !possibleValues.length) { return value }
for (let possibleValue of possibleValues) {
// Using `isEqual` for possibility of placing enums on array and object schemas
if (_.isEqual(possibleValue, value)) { return value }
}
throw new Error(`Validation failed at ${keyPath}, ${JSON.stringify(value)} is not one of ${JSON.stringify(possibleValues)}`)
}
}
})
let isPlainObject = value => _.isObject(value) && !Array.isArray(value) && !_.isFunction(value) && !_.isString(value) && !(value instanceof Color)
let sortObject = value => {
if (!isPlainObject(value)) { return value }
const result = {}
for (let key of Object.keys(value).sort()) {
result[key] = sortObject(value[key])
}
return result
}
const withoutEmptyObjects = (object) => {
let resultObject
if (isPlainObject(object)) {
for (let key in object) {
const value = object[key]
const newValue = withoutEmptyObjects(value)
if (newValue != null) {
if (resultObject == null) { resultObject = {} }
resultObject[key] = newValue
}
}
} else {
resultObject = object
}
return resultObject
}
module.exports = Config